nes-support mapper 115

BizHawk.Emulation/BizHawk.Emulation.csproj

@@ -124,6 +124,7 @@
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper044.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper049.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper095.cs" />
+    <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper115.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper206.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\MMC3_family.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\NES-QJ.cs" />

BizHawk.Emulation/Consoles/Nintendo/Docs/compatibility.txt

@@ -5,7 +5,6 @@ Complete - what it sounds like
 Good - thought to be complete
 Decent - mostly compatible, but many significant edge cases not tested
 Minimal - Important games are playable, but emulation is known not to be complete
-~NEEDED~ - Needed for neshawk 1.0
 Needed - Someone should do this
 Nothing - Not implemented
 Junk - Who cares about this. Not enough games, or unlicensed junk or no interesting games
@@ -86,7 +85,7 @@ Open bus and bus conflict emulation is not considered complete or thorough in an
 107	Unlicensed	Complete
 112	Misc (CN)	Nothing
 113	=USELESS=	Junk
-115	MMC3Variant	Nothing
+115	MMC3Variant	Decent
 118	TLSROM		Complete
 119	TQROM		Complete
 140	Misc (J)	Complete

BizHawk.Emulation/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper115.cs

@@ -0,0 +1,68 @@
+using System;
+using System.IO;
+using System.Diagnostics;
+
+namespace BizHawk.Emulation.Consoles.Nintendo
+{
+	public class Mapper115 : MMC3Board_Base
+	{
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			//analyze board type
+			switch (Cart.board_type)
+			{
+				case "MAPPER115":
+					break;
+				default:
+					return false;
+			}
+
+			BaseSetup();
+
+			return true;
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			base.SyncState(ser);
+			ser.Sync("prg_mode", ref prg_mode);
+			ser.Sync("prg_page", ref prg_page);
+			ser.Sync("chr_block_or", ref chr_block_or);
+		}
+
+		bool prg_mode;
+		int prg_page, chr_block_or;
+
+		public override void WriteWRAM(int addr, byte value)
+		{
+			base.WriteWRAM(addr, value);
+			switch (addr & 1)
+			{
+				case 0:
+					prg_mode = value.Bit(7);
+					prg_page = (value & 0xF) * 2;
+					break;
+				case 1:
+					chr_block_or = (value & 0x1)<<8;
+					break;
+			}
+		}
+
+		protected override int Get_PRGBank_8K(int addr)
+		{
+			int bank_8k = mapper.Get_PRGBank_8K(addr);
+			if (prg_mode == false) return bank_8k;
+			else if (addr < 0x4000)
+			{
+				return (addr >> 13) + prg_page;
+			}
+			else return bank_8k;
+		}
+
+		protected override int Get_CHRBank_1K(int addr)
+		{
+			int bank_1k = base.Get_CHRBank_1K(addr);
+			return bank_1k | chr_block_or;
+		}
+	}
+}

BizHawk.Emulation/Consoles/Nintendo/NES/iNES.cs

@@ -105,6 +105,7 @@ static string ClassifyTable = @"
 71	-1	-1	-1	-1	CAMERICA-BF9093; Micro Machines (U)
 79	-1	-1	-1	-1	AVE-NINA-06; Blackjack (U)
 113	-1	-1	-1	-1	AVE-NINA-06; ???
+115	-1	-1	-1	-1	MAPPER115
 232	-1	-1	-1	-1	CAMERICA-ALGQ; Quattro Adventure
 240	-1	-1	-1	-1	MAPPER240
 ";